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Упит dcterms_creator_txt:Ivan A. Dulić

1588 items

  • Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels

    Irina Zahirovic, Dušan Danilović, Milica Šuput Vranjin, Miloš Tripković (2023)
    drilling fluid formulation, upstream oil and gas, fluid dynamics, fluid loss control, gel

  • Two approaches to compilation of bilingual multi-word terminology lists from lexical resources

    Branislava Šandrih, Cvetana Krstev, Ranka Stanković (2020)
    In this paper, we present two approaches and the implemented system for bilingual terminology extraction that rely on an aligned bilingual domain corpus, a terminology extractor for a target language, and a tool for chunk alignment. The two approaches differ in the way terminology for the source language is obtained: the first relies on an existing domain terminology lexicon, while the second one uses a term extraction tool. For both approaches, four experiments were performed with two parameters being ...
    Linguistics and Language,Software,Artificial Intelligence,Language and Linguistics

  • Digital Library From A Domain Of Criminalistics As A Foundation For A Forensic Text Analysis

    Dalibor Vorkapić, Aleksandra Tomašević, Miljana Mladenović, Ranka Stanković, Nikola Vulović (2017)
    U ovom radu predstavljen je model koji omogućava prikupljanje, pripremu, opis metapodataka, upravljanje i eksploataciju, uključujući pretragu punog teksta dokumenata iz domena kriminalistike napisanih na srpskom jeziku. Predloženi pristup primenjuje se na veb portalu koji sakuplja različite tekstove nastale iz časopisa Akademije za kriminalistiku i policijske studije, Krivičnog zakona Srbije, konferencija „Tara“ i „Reiss“, kao i iz nekih doktorskih disertacija vezanih za ovu oblast istraživanje. Nakon obrade teksta, korpus koji sadrži preko 5500 stranica običnog teksta, kreiran je i ...
    Omeka, Wordnet, pretraga punog teksta, morfološka i semantička pretraga teksta, proširenje upita
    ... extending the query literals in the other language which can be reached via a synchronized synsets. Figure 4. Sequence diagram a multilingual query expansions 17 Cvetana Krstev, Ranka Stanković, Duško Vitas, Ivan Obradović, “The Usage of Various Lexical Resources and Tools to Improve the ...
    ... being held in a private location" being written ahead of time. Here are some facts about suicide letters: A suicide note is typically brief, concise and highly propositional with a degree of evasiveness. A credible suicide letter must be making a definite unequivocal proposition in a situational ...
    ... ANALYSIS AS A NEXT STEP IN A STUDY OF FORENSIC TEXTS The semantic network Serbian WordNet (SWN) is a lexico-semantic resource that has been developed based on the idea of the Princeton WordNet (PWN), a mental lexicon that helps scientists working on psycholinguistic projects. SWN is a set of above ...

  • Flotability of chalcopyrite from the Rudnik deposit

    Đurica Nikšić, Predrag Lazić, Milena Kostović (2021)
    Директно селективно флотирање олова, бакра и цинка у флотацији рудника „Рудник” датира од 1984. године. Технолошка шема омогућава директно издвајање селективних концентрата у три циклуса. У првом циклусу се издваја минерал олова (галенит), док су минерал бакра (халкопирит) и минерал цинка (марматит) депримирани. У другом циклусу се оток концентрације минерала олова кондиционира и припрема за издвајање минерала бакра. Након кондиционирања, у овом циклусу се издваја минерал бакра. У трећем циклусу се оток концентрације минерала бакра кондиционира и припрема за ...
    Директно селективно флотирање, халкопирит, KAX, NaCN

  • A Model for Determining Fuzzy Evaluations of Partial Indicators of Availability for High-Capacity Continuous Systems at Coal Open Pits Using a Neuro-Fuzzy Inference System

    Miljan Gomilanović, Miloš Tanasijević, Saša Stepanović, Filip Miletić (2023)
    This paper presents a model for determining fuzzy evaluations of partial indicators of the availability of continuous systems at coal open pits using a neuro-fuzzy inference system. The system itself is a combination of fuzzy logic and artificial neural networks. The system availability is divided into partial indicators. By combining the fuzzy logic and artificial neural networks, a model is obtained that has the ability to learn and uses expert judgment for that learning. This paper deals with the ...
    системи, континуални системи експлоатације (роторни багер-транспортер-дробилично постројење), рударство, расположивост, меко рачунарство, фази логика, ANN, ANFIS

  • Fuzzy expert analysis of the severity of mining machinery failure

    Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković (2020)
    Mining machinery failure is almost an everyday occurrence. Usually the failures bare certain consequences, which require additional financial costs to repair and restore the system to its operational state. The consequences are viewed through negative and damaging effects a failure has on the machine, health and safety of the employees, work environment, and on the environment. The removal of the consequences of the failure requires additional financial investment, which has a negative impact on the company’s business. In order ...
    Severity of failure, Severity of failure assessment, Mining machinery, Fuzzy sets, Fuzzy logic

  • On the distribution modulo 1 of the sum of powers of a Salem number

    Dragan Stankov (2016)
    It is well known that the sequence of powers of a Salem number θ, modulo 1, is dense in the unit interval, but is not uniformly distributed. Generalizing a result of Dupain, we determine, explicitly, the repartition function of the sequence , where P is a polynomial with integer coefficients and θ is quartic. Also, we consider some examples to illustrate the method of determination.
    Algebraic integer, the house of algebraic integer, maximal modulus, reciprocal polynomial, primitive polynomial, Schinzel-Zassenhaus conjecture, Mahler measure, method of least squares, cyclotomic polynomials

  • Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention

    Milica Ješić, Bojan Martinović, Stefan Stančić, Miroslav Crnogorac, Dušan Danilović (2023)
    Gas wells, particularly those situated onshore, play a vital role in the global energy sector by supplying a significant portion of natural gas. However, operational challenges, notably gas hydrate formation, pose substantial issues, leading to complications such as flowline blockages and unexpected well shutdowns. Gas hydrates, crystalline structures resembling ice, ...
    Gas Well, Gas Hydrate Formation, Well Modeling, Well Performance Optimization, Choke Position Adjustments, Methanol Injection

  • Long-term planning methodology for improving wood biomass utilization

    Vladimir Vukašinović, Dušan Gordić, Marija Živković, Davor Koncalović, Dubravka Živković (2019)
    The insufficiently developed forest management system is often followed by undeveloped forest resources supply chain and insufficient institutional support. These cause inefficient usage of fuel-wood as well as huge amounts of unused forest residues. In order to achieve optimal and long-term sustainable utilisation of biomass, an original methodology based on the interaction of mathematical optimization and backcasting approach has been developed. Mathematical optimization is used for both generation and consideration of techno-economic parameters of the forest biomass supply chain. ...
    Long-term planning methodology, Forest biomass, MINLP, Backcasting

  • Terminological and lexical resources used to provide open multilingual educational resources

    Biljana Lazić, Danica Seničić, Aleksandra Tomašević, Bojan Zlatić (2016)
    Open educational resources (OER) within BAEKTEL (Blending Academic and Entrepreneurial Knowledge in Technology enhanced learning) network will be available in different languages, mostly in the languages of Western Balkans, Russian and English. University of Belgrade (UB) hosts a central repository based on: BAEKTEL Metadata Portal (BMP), terminological web application for management, browse and search of terminological resources, web services for linguistic support (query expansion, information retrieval, OER indexing, etc.), annotation of selected resources and OER repository on local edX ...
    otvoreni obrazovni resursi, leksički resursi, obrada prirodnih jezika, terminologija
    ... words: učiteljica, N651+Hum+GM:fs4v. The first part of entry is a lemma: učiteljica. N is a sign noun (part of speech), 651 is an inflectional class, +Hum is a marker for human entity and +GM is a marker for gender. After that, there is a part of entry for grammatical categories. F is gender feminine ...
    ... and a login page. Each term comes with the name, definition, synonyms, abbreviations and a bibliographic source. Each term, except the top term in dictionary tree, has a hyperonym term, while each term can have an arbitrary number of hyponym terms. Term name is also a link that leads to a page ...
    ... time- consuming, laborious teachers’ tasks such as curriculum creation or assignment assessment and do so in a timely manner. Time a teacher can spend with a student is usually very limited, with a detriment to students, resulting in insufficient interaction and feedback. These tools help overcome these ...

  • Multiword Expressions between the Corpus and the Lexicon: Universality, Idiosyncrasy and the Lexicon-Corpus Interface

    Verginica Barbu Mititelu, Voula Giouli, Kilian Evang, Daniel Zeman, Petya Osenova, Carole Tiberius, Simon Krek, Stella Markantonatou, Ivelina Stoyanova, Ranka Stankovic, Christian Chiarcos (2024)
    Predstavljamo trenutne aktivnosti na definisanju interfejsa leksikona i korpusa koji će služiti kao referenca u prikazu polileksemskih jedinica - višečlanih izraza - (različitih tipova - imenskih, glagolskih, itd.) u specijalizovanim leksikonima i povezivanju ovih unosa sa njihovim pojavljivanjima u korpusima. Konačni cilj je korišćenje ovakvih resursa za automatsko identifikovanje višečlanih izraza u tekstu. Uključivanje nekoliko prirodnih jezika ima za cilj univerzalnost rešenja koje nije usredsređeno na određeni jezik, kao i prilagođavanje idiosinkrazijama. Raspravljaju se izazovi u leksikografskom opisu višerečnih ...
    multiword expression lexicon, corpus, proof-of-concept lexicon encoding

  • Развој геолошког терминолошког речника ГеолИССТерм

    Ranka Stanković, Branislav Trivić, Olivera Kitanović, Branislav Blagojević, Velizar Nikolić (2011)
    ... resources A taxonomy is a hierarchical classification of concepts, things, objects, beings, events or prin- ciples that are classified. A trunk or tree is a struc- ture that makes it possible to define a hierarchical relation between concepts. The parent-child rela- tions within a tree represent ...
    ... about a certain domain GeolISSTerm Strong semantic description Weak semantic description Thesaurus A taxonomy expanded to include additional semantic relationships Index a list of terms specific to a certain field Glossary an index containing definitions of terms Taxonomy A hierarchical ...
    ... of knowledge which includes the vocabulary containing a set of concepts, seman- tic relationships between those concepts and simple reasoning about a specific domain. It can also be regarded as a data model describing a certain field, namely, a domain and is used for drawing inferences on the basis ...

  • Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia

    Filip Arnaut, Dragana Đurić, Uroš Đurić, Mileva Samardžić-Petrović, Igor Peshevski (2024)
    General Earth and Planetary Sciences
    ... that employ the A dataset with 100 and 250 trees demonstrate this trend. The F1 score is a crucial evaluation metric for assessing the overall performance of a model and is on par with the AUC (Area Under the Receiver Operating Char- acteristic Curve) metric. It displays a categorization of ...
    ... it can be noted that there exists a disparity of approximately 2% in the AUC metric for the ophiolite class, with the RF_C_100 model exhibiting a slightly higher AUC value. The precision metric exhibits a significant contrast, with RF_C_100 demonstrating a 9% higher precision. In general, the ...
    ... models. A comparative analysis can be conducted between RF_C_100_5MI and KNN_C_5, both of which are con- sidered the top-performing models, with RF_C_100 serving as the reference model. A false positive (FP) map can be utilized to draw a comparison, wherein all instances that a particular ...

  • Arsenic in tape waters of the south Pannonian basin (Serbia) and arsenic risk assessment

    Petar Papić, Marina Ćuk, Maja Todorović, Jana Stojković, Bojan Hajdin, Nebojša Atanacković, Dušan Polomčić (2012)
    ... As [µg/L] As [µg/L] A u th o r C o p y • A u th o r C o p y • A u th o r C o p y • A u th o r C o p y • A u th o r C o p y • A u th o r C o p y • A u th o r C o p y • A u th o r C o p y • to a depth of 250 m, which meet ...
    ... Pannonian Basin *e-mail: ppapic@rgf.bg.ac.rs A u th o r C o p y • A u th o r C o p y • A u th o r C o p y • A u th o r C o p y • A u th o r C o p y • A u th o r C o p y • A u th o r C o p y • A u th o r C o p y • (10 μg/L) ...
    ... Geographical location of the test area. A u th o r C o p y • A u th o r C o p y • A u th o r C o p y • A u th o r C o p y • A u th o r C o p y • A u th o r C o p y • A u th o r C o p y • A u th o r C o p y • Experimental ...

  • Design of a sucker rod pumping system

    Ana Ponoćko (2024)
    For a long time in the history of oil production, sucker rod pumps have been the first and in many cases the only choice when it comes to mechanical extraction methods. Proper selection of each individual element of the system enables optimization, which entails benefits in the form of increased efficiency and reduced costs. The first part of the paper presents the underground and surface equipment of the rod pump and describes the operation of the entire system. The ...
    sucker rod pump, fluid production, mechanical extraction methods,, Prosper, QROD, RODSTAR
    ... 2 | Gasanchors....a e eeaeaaaaaaeaeaeaeaa a aaeaeaaeeaeaeaeaaaktaktaet 22 3.3 - Sucker Rods ... eaaeeaeaeaeaaa a aaeaeaeaeeaeaeaeaaaktaktaet 24 3.4 | Tubing anchor........aaaaaaa a anaaanaaaaaeaa a aaa a aaaaaaaaaataatetet 26 4 SURFACE EQUIPMENT7........ a eeaaea a aaeaeae a aataeaataitekot 27 ...
    ... SUCKER ROD PUMPING SYSTEM.......a a anaeananaeee 32 5.1 · RodStar.a a eeaeaeaaaeaeaeaaaaaaaeaeaeaNeeaeeaeaeaaaataktae t 35 5.1.1. RodStar FeatureS.aaaaaaaaaaaaa a aeaan e ae a aaeaeaeaeaaaaaaeaeaittittkoi 36 5.2 | ProspeF..a a nanaaaraeaaeaaaaa a aaaaaaeaaaaaaa a aaaaaaeaaaaaaaNtatet 37 5.2.1 ...
    ... 1. Prosper Features al nanaaaaaaaaa a aaaaaaaaaaeaai ttt 38 6 COMPARATIVE ANALYSIS OF DIFFERENT SOFTWARE TOOL ... 39 6.1 „WellXX-1Iin RodStar....a e ee e aeaeaaeeaeeaeaaakaaktaet 40 6.2 WellXX-Iin Prosper......caaaaaaaa a anaraeaa a a aaaaaaaaaaaaea a aaataNtatet 44 63 _ WellXX-Iin QROD.... ...

  • Coal homogenization stockyard sizing “Tamnava – Zapad” case study

    Božo Kolonja, Dinko Knežević, Ranka Stanković, Dejan Stevanović, Detlef Trummer (2016)
    ... of layers. However, a problem is encountered when the quality range is large, and the stacker has to work with a large difference in number of layers. Smaller ranges of observed parameters require a smaller number of layers, and vice versa. A small number of layers require a slow stacking speed ...
    ... (net), meaning a gross value of 1 to 2 days, while emptying takes twice as long. The variability of pile size moves this rule, because filling a shorter pile will take a shorter amount of time, and conversely, a longer pile takes longer to fill. Of course, planning pit operations as a function of ...
    ... for a power plant, as the end user, is considered to be ±500 kJ/kg [Ignjatović et al, 2007, Stevanović et al, 2015]. By observing the standard deviation, a diagram can be plotted where the number of layers is given as a function of the value range of the observed parameter. Figure 1 shows a standard ...

  • The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system

    Marija Ilic, Franz-Hubert Haegel, Vesna Pavelkic, Dragan Zlatanovic, Snezana Nikolic-Mandic, Aleksandar Lolic, Zoran Nedic (2016)
    The influence of additives (alkyl polyglucoside, Glucopon 600 CS UP and alcohol ethoxylate C18E100) on the behavior of the water/toluene/Lutensol ON 50 (technical oxoalcohol, i-C10E5) microemulsion system as a function of temperature and composition has been investigated. The phase behavior of the microemulsions was determined by vertical sections through the Gibbs phase prism (fish-like phase diagrams). Alkyl polyglucoside shifts the one phase region to lower temperatures compared with water/toluene/Lutensol ON 50 mixtures. This is contrary to the expectation, considering ...
    микроемулзија, толуен, алкил полиглукозид, оксоалкохол етоксилат, појачивач ефикасности, „fish“ дијаграми
    ... Phase diagram determination KahlIweit ef a/ [30,31] introduced a way of study- ing the phase behavior of ternary or quaternary mix- tures. A procedure to obtain an overview of the phases is to draw the phase diagram at a constant oil/water ratio as a function of temperature, 7, and surfactant ...
    ... resemble the shape of a fish. Typically, temperature- -composition phase diagrams obtained for a 1/1 mass ratio of oil and water show a one-phase microemul- sion at relatively high surfactant concentration. At lower surfactant concentration a three-phase body exists consisting of a middle-phase m ...
    ... 20 and 20 . When a surfactant is mainly dissolved in water and two phases consist of a surfactant-rich water (lower) phase in equilibrium with an excess oil phase, the region is denoted as 20. At high tempe- rature a nonionic surfactant is more soluble in oil and forms a surfactant-rich oil ...

  • Značaj geografske širine za lociranje uzročnika magnetnih anomalija kod prospekcije arheoloških lokaliteta

    Vesna Cvetkov (2020)
    ... Eppelbaum, L., Ben-Avraham, Z., Itkis, S. 2003. Ancient Roman Rema- ins in Israel provide a challenge for 23 A k t u e l n a i n t e rd i s c p l i n a r n a i s t ra ž i v a n j a t e h n o l o g i j e u a r h e o l o g i j i j u g o i s t o č n e E v ro p e physical-archaeological modeling ...
    ... iz više as- pekata i samim tim tačnije definisanje potencijalnih zona od interesa za arheo- 15 A k t u e l n a i n t e rd i s c p l i n a r n a i s t ra ž i v a n j a t e h n o l o g i j e u a r h e o l o g i j i j u g o i s t o č n e E v ro p e loška istraživanja i lociranje arheoloških ...
    ... dovoljno malih dimenzija da se ponašaju kao mali magneti i orijentišu paralelno sa MPZ. 17 A k t u e l n a i n t e rd i s c p l i n a r n a i s t ra ž i v a n j a t e h n o l o g i j e u a r h e o l o g i j i j u g o i s t o č n e E v ro p e Drugi bitan i najčešće razma- tran parametar ...

  • Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains

    Renata Jach, Nevenka Đerić, Špela Goričan, Daniela Reháková (2014)
    carbon and oxygen isotopes, radiolarians, calcareous dinoflagellates, radiolarites, Krížna Nappe, West ern Carpathians, Tethys
    ... Jagiellonian University, Oleandry 2a, 30-063 Krakow, Poland, e-mail: renata.jach(a)uj.edu.pl Faculty of Mining and Geology, Belgrade University, Djusina 7, Belgrade, Serbia, e-mail: djeranen(ayrgf.bg.ac.rs Ivan Rakovec Institute of Palaeontology, ZRC SAZU, Novi trg 2, SI-1000 Ljubljana, Slovenia ...
    ... [wt%] +-Pk201O. + PR948 + Pk1808 radiolarian St om io sp ha er a mo lu cc an a m Co lo mi sp ha er a na gy i ua -— sa Sc hi zo sp ha er el la C o l o m i s p h a e r a pi en in en si s a < Pk35 A. radiolarian o mwp Zadnia Kopka Košcieliska section in the Western ...
    ... BHISSSBSEEE j sošBSSGčS Š <-Lb51 ŠŠEŠŠEEŠS·” zi III <—-Lb38 A. s*sqassgsoečge d446 BSSsaBSBESS Ha:FO:B:Bo-r:B Cume'Š_EB°E sžaRSŠsSsSBOVŠ s gm%š—„··· & S <-L183 A, HIRKEEE Kl —_u! A ŠES Š8 s 555 90 20 Š a ŠSE Š Š +—-L140 A Šš - <—-L58 A. B Sample | CaCO,{[wt%] Microfacies Calcareous din ...

  • Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs

    John Nyame (2024)
    The importance of mitigating the effects of global climate change has necessitated an in-depth exploration of innovative strategies to reduce carbon dioxide (CO2) emissions. Among these strategies, Carbon Capture, Utilization, and Storage (CCUS) has emerged as a promising and transformative solution. This master thesis delves into the diverse realm of CCUS processes, aiming to unravel the positives challenges, and opportunities within this dynamic field. The analysis begins with a systematic examination of carbon capture technologies, encompassing post-combustion, pre-combustion, and oxy-fuel combustion ...
    Carbon Capture, Utilization and Storage
    ... unit has a fluid knockout drum, a compressor, a cooler and a gas turbine driver. Again, the compressor train with its gas turbine drive was designed and installed as part of the much larger operations of preparing the whole field development. The 4 units cost around 79million USD. A highly deviated ...
    ... provided by a regenerable metal oxide catalyst [47]. For pre-combustion CO2 capture, chemical looping can be combined with IGCC to produce syngas as a valuable byproduct. These technologies use a metal oxide as an oxygen carrier to circulate oxygen between the air and fuel reactors. A challenge ...
    ... exergy difference between the inlet and outlet. Here, the power consumed in a pump is added to the calculation of the exergy loss for a pump. In contrast, the power produced in a turbine is subtracted from the exergy loss of a turbine Pump: AEX loss= n'(eXin-eXou)+W"p (11) Turbine: AEx loss ...